SOLUTION: Determine whether the relation is a function. Explain. x=-4 a) The graph of the relation is a vertical line and every vertical line intersects the graph at only one point.

Question 1008592: Determine whether the relation is a function. Explain.
x=-4
a) The graph of the relation is a vertical line and every vertical line intersects the graph at only one point.
b) The graph of the relation is a vertical line and so there is a vertical line, x=a, that intersects its graph at more than one point.
c) The graph of the relation is a horizontal line and every vertical line intersects its graph at only one point.
d) The graph of the relation is a horizontal line and so there is a vertical line, x=a, that intersects its graph at more than one point.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
The graph of x = -4 is a vertical line that passes through -4 on the x axis. This is NOT a function because it fails the vertical line test. Any vertical line is NOT a function.
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